Shock-absorber.



E. J. GLACKIN.

SHOCK ABSORBER.

APPLICATION FILED APR. n. 1916.

1 ,29,064, Patented Dec. 4; 1917.

E. J. GLACKIN.

SHOCK ABSORBER.

n rucmon nub APR. 11, I916.

1,249,06Q; Patented Dec. 4, 1917.

2 SHEETS-SHEET g.

EDWARD J. GLACKiN, or CHICAGO, ILLINOIS.

FldlQE, i

SHOCK-ABSORBER.

Specification of Letters Patent. Patented Dec 4 191'}.

Application filed Apri117,1916. seri'ainb. 91,509..

To all whom it may concern? 1 Be it known that I, EDWARD J. GLACKIN,

, a citizen of the United States, and a residentof Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements in Shock-Absorbers', of which the following is a full, clear,

I and exact specification. a

i so.

lily "nvention is concerned with shock abw sorbcrs, such as are ordinarily used in connection with the body supportingsprings' of automobiles to take "up the shocks result ing from drivingrapidly over rough roads, and it is designed to produce a single device] of the class described which will be capable of responding to'compression or tension, as the case may be, wherever itlis applied,th'us increasingits efiiciency and utility over the ordinary structure which can Work either under compression or tension, as it may be designed or located, but notunder both.

, To this end, my invention isembodied in certain novel constructions and combina' tions of'element s, all as willbe set forth in the specification and particularly pointed out'in the claims. f v To illustrate my invention,1 I annexrhere to two sheets of drawings inwhich the same reference charactersare used to designate identical parts in all the figures-mt which- Figure 1 is a side"elevation showinga shock absorber embodying. my invention, located between the ends of a body-supporting spring and side bar of ti -vehicle,

Fig. 2 is a view-,bn anenlargedscale, partly in section, asit w uld appear on the line 2 7,2 of Fig. 1;;

Fig. 3 is a view insection as it would appear on the line 3 3ofFig.2; p C V ig; 4 is a plan view as it would appear in section on theline of Fig. 3; and

Fig. 5 is a' perspective View of the yoke members of the upper side detached from the associated members h In carrying out my mvention in its preferred form,I employ a pa r of outer yokes l0 and 11, the upper outer yoke being'best seen' in perspective in Fig. 5, where it will befseen to have theflbarlike base portion 12 with the two perforatedbearing ears 13 projecting upwardtherefrom, so that the yoke can be'sujspended by the bearing in' 14 from the outer end of the body side bar 15. It has'the downwardly projecting arms'l6 forming the fork of the yoke, and each arm is provided with one member of a slot and pin connection, the member shown beingthe slot 17. The lower yoke member 11 is somewhat'different in shape owing to the fact that its arms 1 6 preferably stand substantially at right angles to the arms 16 when both are referred to the'common axis of the yokes,and consequently the base portion 12 is in the form of a cross with thearmsl l6 projecting upward from two ends of the cross, while the bearing ears 1?) project downward from the other endof the cross to receive the bolt or pin 1 1 by which the lower yoke is securedto the outer end of the body spring 15. The arms'lti of the lower outer yoke 11 are provided with'their members of the slot and pin connection, which in the illustration shown are the p lf Inside of the outer yokes 10and 11 are a pair of inner yokes 18and 19, both of which are provided with bases 20 and 20, respectively, which bases are preferably circular inform, and have the short arms 21 and'Ql respectively projecting therefrom to sup portthevertical arms 22 and 22 each of which are provided on their inner ends with slot and pin elements, the arms 22 in the form illustrated being provided with the slots 23, which cooperate with the pins 17 l of the lowermost outer yoke 11,while the arms 22 are provided with the pins 23 which coope'ratewith the slots 17 in the arms of the uppermost outer yoke 10. It will be understood from the foregoing connections pressed, whether the outer yokes be drawn away from eaclr other or pushed toward each other. When they are drawn away from each other, the pins 17 and 23 are held at the inner endsof the cooperating.

slots 23 and 17, and as a consequence, the heads 20 and 20 of the inner yokesare pulled together by the diverging movement of the outer yokes; On the otherhand, when the outer yokes are pushed together,

their bases 12 and 12" rest on'the bases 20 and 20 of the inner yokes, respectively, and forcethemtogether, this movement being cular bases 20 and 20 respectively, from the two inner yoke s. To preserve the bag from moisture and wear I prete ably surround it by a "water-proof canvas bag 28 and varying the pressure of the air in the bag, I am able to control the resiliency of the shock absorber; c

As anotherform of cushioning element which I may employ with or without the rubber sack 24, I have shown the helically coiled expanding spring29 which surrounds the telescoping cups '27"- and 27?, the ends thereof being preferably seated on annular shoulders 30 and 30 formed on the inner surfaces of the peripheries of the circular bases 20 and 20.

While I have shown and described my invention as embodied in the form which I at presentconsider best adapted to carry out itsv purposes, it will be understood that it is capableof modifications, and that I do not desire to be limited in the interpretation ofithe following claims, except as may be necessitated by the state of the prior art.

IVhat I-claim as new and desire to secure Letters Patent of the United. States is: 1. In a device of the class described, the combination with a pair of telescoping ele ments, each provided at one end with means to secure it to one of a pair of supporting elements, of telescoping connections between said' telescoping elements which prevent their entire separationbut allow them-to approach each other anda cushioning element disposed between said telescoping elements and put under compression whether the securing means of the two telescoping elements are drawn apart orpressed to gether, said, cushioning: element consisting of an inflated air-tight sack interposed be tween said telescoping elements, which are unyielding and fit so snugly about the sack as; to prevent its yielding outward in any a direction when it is compressedibyithe approach of said elements.

2. In a deviceof the class described, the combination with a pair of telescoping ele ments, each provided at one end with means to secure it to one of a pair of supporting elements, of telescoping connections betweensaid telescoping elements which prevent their entire separation but allow them to approach each other, and cushioning ele= ments disposed between said telescoping e1e= ments and put under compression? whether the securingmeans of the two telescopnig elements are drawnfapart or pressed togethenoneof said cushioning elements con common axis, each provided at its outer end with securingmeans"and'onits inner ends with one element of the slot and pinconnc: tion', of a'pair ofinn'er'opposed yokesisituated within the first-mentioned pair. but at an angle to the adjacent outer yoke, each at said inner yokes ha-vingthe other element of aslot and pin connection onits'inner end cooperating withfthe slot and pin ele; ment of thedirectly opposed "outer yoke,

and a cushioning element interposed" between the "innerfyjokes and put underten sion whether said-outeryokes are pulled away from each'otheror pushed toward each other.

4. In a device of the class described, the combination 7 with" a pair of opposed outer yokes standing at ditferent jangles to the common axis, each provided on its base' with a pair ofears and having on itsinneren'ds one element of'a'slot and pin connectiomofa pair of opposed innerfyokes within the outer yokes standing atdifieren't-angle's to the common axis, but directly opposedto the opposed outer yokes,;each'offsaid inner yokes rovided at itsinnerends with the other element of theslot and pin connection with the] directly opposed; outer yoke, a pair oftelescoping cups having their bottoms sej-j curedtoi the bases ofjthe adjacent inner yokes, tween"sa1d" telescoping cups.

5. In adevice ofthe class 'described', tlie combination with two opposed elements and""cushioning means" disposed bemovable toward and from each other, of a yielding outward when they are forced topair of closely fitting telescoping cups ingether. 10 terposed between said elements in such a -In witness whereof, I have hereunto set manner that they are forced together my hand and ailixed my seal, this 14th day 5 whether the two opposed elements are moved of April, A. D. 1916.

toward or away from each other, and an in- EDWARD J. GLACKIN. [L. s.] flated air-tight sack filling said cups when Witness: they are separated and prevented from JOHN HOWARD MGELROY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G." 

